IN171149B - - Google Patents
Info
- Publication number
- IN171149B IN171149B IN591/MAS/88A IN591MA1988A IN171149B IN 171149 B IN171149 B IN 171149B IN 591MA1988 A IN591MA1988 A IN 591MA1988A IN 171149 B IN171149 B IN 171149B
- Authority
- IN
- India
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
- C07D201/16—Separation or purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Other In-Based Heterocyclic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873729853 DE3729853A1 (de) | 1987-09-05 | 1987-09-05 | Verfahren zur aufarbeitung von destillationsrueckstaenden, die bei der reinigung von caprolactam anfallen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN171149B true IN171149B (no) | 1992-08-01 |
Family
ID=6335369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN591/MAS/88A IN171149B (no) | 1987-09-05 | 1988-08-18 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4892624A (no) |
| EP (1) | EP0306874B1 (no) |
| JP (1) | JPH0816096B2 (no) |
| DE (2) | DE3729853A1 (no) |
| ES (1) | ES2065902T3 (no) |
| IN (1) | IN171149B (no) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4322953A1 (de) * | 1993-07-09 | 1995-01-12 | Basf Ag | Verfahren zur Gewinnung von Caprolactam und eines Alkalimetallcarbonats aus Destillationsrückständen, die bei der Reinigung von Caprolactam anfallen |
| DE4407222A1 (de) * | 1994-03-04 | 1995-09-07 | Basf Ag | Verfahren zur Rückgewinnung von Caprolactam aus Oliogo- und/oder Polymeren des Caprolactams |
| FR2781796B1 (fr) * | 1998-07-28 | 2000-09-22 | Rhone Poulenc Fibres | Procede de deshydratation de lactame |
| DE10022988A1 (de) * | 2000-05-11 | 2001-11-15 | Basf Ag | Verfahren zur Aufbereitung von Pyrrolidon- und N-Vinylpyrrolidon-Rückständen |
| FR2809395B1 (fr) * | 2000-05-26 | 2002-07-19 | Rhodia Polyamide Intermediates | Procede de purification de lactames |
| US20050029086A1 (en) * | 2001-08-27 | 2005-02-10 | Groot Zevert Louise A | Process for distilling alkaline caprolactam product at reduced pressure |
| US7022844B2 (en) | 2002-09-21 | 2006-04-04 | Honeywell International Inc. | Amide-based compounds, production, recovery, purification and uses thereof |
| DE10253095A1 (de) * | 2002-11-13 | 2004-06-17 | Basf Ag | Verfahren zur Reinigung von Caprolactam |
| CN101312947B (zh) * | 2005-11-25 | 2011-04-13 | 宇部兴产株式会社 | 聚酰胺的解聚方法和聚酰胺单体的制造方法 |
| EP2784102B1 (de) | 2013-03-26 | 2015-12-09 | Uhde Inventa-Fischer GmbH | Verfahren und Vorrichtung zur kontinuierlichen Rückführung von Extraktwässern im Polyamidherstellungsprozess |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE858702C (de) * | 1950-12-12 | 1952-12-08 | Chemische Werke Huels G M B H | Verfahren zum Reinigen von Caprolactam |
| US3037032A (en) * | 1953-05-28 | 1962-05-29 | Stamicarbon | Purification of phthalic anhydride, glycerol and phenol |
| US3324011A (en) * | 1963-11-01 | 1967-06-06 | Du Pont | Stabilization of chloro-substituted aromatic amines during thermal stress |
| CH547805A (de) * | 1970-10-01 | 1974-04-11 | Inventa Ag | Verfahren zur reinigung von lactamen. |
| CH549020A (de) * | 1970-12-22 | 1974-05-15 | Inventa Ag | Verfahren zur reinigung von lactamen. |
| CH547286A (de) * | 1971-01-06 | 1974-03-29 | Inventa Ag | Verfahren zur reinigung von lactamen. |
| JPS5330303B2 (no) * | 1972-04-22 | 1978-08-25 | ||
| DE2245300A1 (de) * | 1972-09-15 | 1974-03-28 | Bayer Ag | Verfahren zur aufarbeitung von borsaeurehaltigen lactamrueckstaenden |
| IT1113404B (it) * | 1979-02-28 | 1986-01-20 | Snia Viscosa | Internazionale brevetti s.r.l.via brentano 2 milano |
| DE2926279A1 (de) * | 1979-06-29 | 1981-01-08 | Basf Ag | Verfahren zur reinigung von caprolactam |
| DD202870A1 (de) * | 1981-09-29 | 1983-10-05 | Leuna Werke Veb | Destillative reinigung von epsilon-caprolactam |
| NL8303028A (nl) * | 1983-08-31 | 1985-03-18 | Stamicarbon | Winning van caprolactam uit caprolactam-bevattend destillatie-residu. |
| US4582642A (en) * | 1984-06-27 | 1986-04-15 | Allied Corporation | Recovery of caprolactam from process residues |
| DD251553A1 (de) * | 1986-07-31 | 1987-11-18 | Leuna Werke Veb | Verfahren zur reinigung von caprolactam |
| JPH04111332A (ja) * | 1990-08-30 | 1992-04-13 | Nec Kyushu Ltd | Ｉｃ試験用治具 |
-
1987
- 1987-09-05 DE DE19873729853 patent/DE3729853A1/de not_active Withdrawn
-
1988
- 1988-08-18 IN IN591/MAS/88A patent/IN171149B/en unknown
- 1988-08-25 US US07/236,215 patent/US4892624A/en not_active Expired - Fee Related
- 1988-09-02 JP JP63218632A patent/JPH0816096B2/ja not_active Expired - Lifetime
- 1988-09-03 DE DE3852448T patent/DE3852448D1/de not_active Expired - Lifetime
- 1988-09-03 EP EP88114431A patent/EP0306874B1/de not_active Expired - Lifetime
- 1988-09-03 ES ES88114431T patent/ES2065902T3/es not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE3852448D1 (de) | 1995-01-26 |
| EP0306874B1 (de) | 1994-12-14 |
| JPH0816096B2 (ja) | 1996-02-21 |
| US4892624A (en) | 1990-01-09 |
| EP0306874A2 (de) | 1989-03-15 |
| DE3729853A1 (de) | 1989-03-23 |
| EP0306874A3 (en) | 1990-07-18 |
| JPS6471854A (en) | 1989-03-16 |
| ES2065902T3 (es) | 1995-03-01 |